diff --git a/python/tests/conftest.py b/python/tests/conftest.py
index 310b2641..008063e1 100644
--- a/python/tests/conftest.py
+++ b/python/tests/conftest.py
@@ -68,6 +68,13 @@
 # copy bundled in the wheel instead. It is read once at import, so it is set
 # here at conftest load, before any test can import litellm.
 os.environ.setdefault("LITELLM_LOCAL_MODEL_COST_MAP", "True")
+# CrewAI exports anonymous usage telemetry from a background thread. Under a
+# test's dead proxy that thread opens a socket while ``no_sockets`` patches
+# ``socket.connect`` process-wide, so an offline-seam test failed on CrewAI's
+# traffic, not ours, whenever the export landed in its window (#1202).
+# ``OTEL_SDK_DISABLED`` would also work but is cleared per test with the other
+# ``OTEL_*`` vars; this switch is CrewAI's own and is read on every export.
+os.environ.setdefault("CREWAI_DISABLE_TELEMETRY", "true")
 
 
 def pytest_collection_modifyitems(items: list[pytest.Item]) -> None:
diff --git a/python/tests/unit/test_transport_proxy_mounts.py b/python/tests/unit/test_transport_proxy_mounts.py
index b32bde2d..bd3be5fa 100644
--- a/python/tests/unit/test_transport_proxy_mounts.py
+++ b/python/tests/unit/test_transport_proxy_mounts.py
@@ -209,3 +209,11 @@ def test_swap_refuses_when_a_mount_could_bypass_it(make: object) -> None:
     client._mounts = {URLPattern("all://"): httpx.MockTransport(lambda r: httpx.Response(200))}
     with pytest.raises(RuntimeError, match="mounts that would bypass it"):
         client.governed_transport.replace_inner(httpx.MockTransport(lambda r: httpx.Response(200)))
+
+
+def test_crewai_telemetry_is_off_for_the_suite() -> None:
+    """``no_sockets`` patches ``socket.connect`` process-wide, so CrewAI's
+    background telemetry export failed these tests at random (#1202). The
+    conftest switch turns it off; this fails if CrewAI stops honouring it."""
+    telemetry = pytest.importorskip("crewai.telemetry.telemetry")
+    assert telemetry.Telemetry._is_telemetry_disabled()